Phonography.



WI'. .VESSES I. KITSBE.

PHONOGBAPHY.

APPLICATION FILED DBO. 31,1908.

fifetal (:1 Base A ept at Reguiied.

low "temp: raw-e lines of Per-0rd produced we) fusible metal on mgtallic Base wp metaili't: Bases Kept 4+ re 'mlred (cw tenypc rafure.

0 of saz4 Records made ca bode of electralytl'c a amwg and aletrophtu fle t-mandat ofone original record used a: female and sccand original recon .uacaf as on"! for mdoeiro 6f copies Patented ma 4, 1909.,

wmlrciwl Copies.

U'Nrrnn sra'rns .151 DOR K llbluE, OF PHILADELPHIA, PEN NSYLYANIA.

rHoNocRAPHYL Specification of Letters Patent.-

Patented May 4, 1909.

Application filed December 31, 1908. Serial No. $70,187.

To all whom it may concern BK it known that Ldsmou lirrsuu a (fillzen of the United States. residing at 1hiladelphia, in the county of lhihulclphia and State of Pennsylvania, have invented ccrtam new and useful Improvements H1 Pho- I no ra hv of which the followin is a )eci licalion.

My invention relates to an improvement in phonography. One of HS ob ects to produce original records wherein the lines of record are in relief and may be used for-the production I of copieswithout necessitating electroplating or etching.

It is also the object of my invention to produce simultaneously two records with the lines in relief and then using one of the records as amale and an electroplate of the other record as a female. for the production of copies by using these records as dies.

I have discovered that if a metal of the necessary low fusing point is deposited or projected in accordance with the vibrating diaphragm on asuitable base, cooled or chilled to the necessary low temperature, the lines of record produced by the hardened metal are high enough for the purpose of producing copies therefrom with theaid of a plastic material.

In carrying out my invention, the first requisite 13 the selection of a suitable metal of low fusing point. It is advantageous that the fusing point of the metal with which the lines of record are produced should beyas low as iscompatible with the -use of the record itself. The following combination I have used with perfect success:To produce one pound of metal, I use lyounccs of cadmium; h} ounces of lead; 2 ounces of tin; 7 ounces of bismuth and 1 ounce of mercury. But it is obvious that different combinations may be used to suit different requirements.

The second consideration in practicing my invention is, to keep the metal always at the necessary high temperature. This temperaturcniay be produced by a burning jet of alcohol gas, or other inflammable material, or it may be produced with the aid of l the electric current and this latter means I prefer. \Vhen the, reservoirin which the molten metal. is contained is made out of iron, the necessary high temperature can easily be reached by sending alternating currents through the coil surrounding the f'iron. The method of producing heat with the aid of resistance coils is so well understood by persons versed in the art that it is mnecessary for me to go into detail of some. it suiiices to say that the regulatimi of the head with the aid of a rheostat easily ac complishcd. I

The plate on which the lines of record are produced is preferably made of a metal of g high fusing point, such for instance as copper or iron. l

i The third consideration in practicing my invention that the base on which the fusible metal is to be projected should always be i maintained at the ncccssarylow temperature. so that the fused metal should.

base, instantaneously coagulate and become solid. This low temperature 7 may be pro duced either through a cold air blast, through a foundation of-ice, or through such artificial means as iliqucfied air. But I have found that ,it is only necessary to subject the lower partof the base to a continuous spray of cold Water. j In practicing my invention, it is also necessary that the metallic base should be scrupir lously clean and all oxidation on said base should be prevented. v r

I have found that a very slight film' of rosin greatly facilitates the combining of the deposited metal with the base.

When the original record is produced, the same may beused without further processes as the negative to iroduce in the usual inantic inateriaL- .But in such cases where a great number of copies have to be used and duce simultaneously two original records with the metallic lines of record in relief. 5.

'css of electroplating, using then thiselectroplate as the female and the other original record as the male for compress ng suitable i essary copies. T hesc, in broad outlines, are

the features'of my invention.

In the accompanying drawing, Figures 1 and 2 illustrate the steps in diagram of the herein described method.- v

llaving now described myinvention, What Patent is l l. The method otproducing a sound rec- 0rd, which consists in forming upon a suitable base a raised line of metal while in a on striking the ner commercial copies with the aid of a plas-i Where one negative is "not sullicient, ll pro-' subject then one of these records to the procl material between them, so as to produce nec-v I claim as new and desire tosccurebyLetters molten state and tOI'I'CHPOHtllHQ to sound \iln'ati( ns and maintaining said base at a sul-- 1 tieientily low l.)l1l]')t5ltltlll'(i to ha l'tlt'll the metal deposited thereon.

The method (it producing a sound ILtfahle haw a raised line of metal while in a molten state and corresponding to sound vibrations, and chilling said base at the time of ((HliilCt of the molten metal whereby the latit)! is caused to eoagttlat 1 at the time of such or-d, Whieh eouniat's in depositing upon a suit i said deposit in :tt'tffll'tltttlt't': with the g a phonograplue tl1apht-agm.

uauee \Yltl) sound \l HHtltHlS a metal of low t'zz iug point and in a molten stato upon a tum havma' a high Mug point to form upon said base a l'itlSt'tl hue corresponding to :r

said mund \i rations and chilling said base at tltt time of eont'aetx ol' the molten metal,

able hast: a raised line of metal while in a I molten state and corresponding to sound at ht-atioiw i't ltttlitg' the ttunpet'atui'o of the hase to a temperature lower than the temperature ol' the metal forming the line, whereby said metal is caused to coagulate when brought into contact with the base.

4. The method of producing a sound l'eeot'cl, whivh consists in forming upon a suit \vluuehy the latt'etis caused to coagulate at the tune of such Contact.

In testimony u'het'eot l atlix my signature Ill ])l't-;ttl('( of two \YIUICSQOS.

ISIDOR KITSEE Witnesses V flnt'tn ll. STILLnY, MARY G. Smut. 

